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Re: P4 2.8 GHz CPU reading half speed as 1.4 GHz

I'm not sure if P4s throttled down when not being stressed, but try running prime95 with cpu-z open. The multi might jump up to 28x when under load. If not, check it out in the bios and manually set it to 2.8.

Re: P4 2.8 GHz CPU reading half speed as 1.4 GHz

Intel 845G-BCH:400/533 MHz

board doesn't support the FSB you need for that particular CPU

I'm assuming you can't manually set the bus freqencies in the bios since its a HP board. But you can check, it'd be F10 or DEL or F2 for the bios (varies by vendor, but i think HP is F10) it would be pretty obvious which setting it is. if your confused just take a picture of the bios screen with a digital camera and post it here.

Re: P4 2.8 GHz CPU reading half speed as 1.4 GHz

Thanks for your suggestions guys.

I have been working on some other projects and have dusted off this machine and am giving it another go. Based on your feedback, I will be taking a closer look at the compatibility of the board and the CPU. I have quite a few P4's in my archives so I will check what candidates might be a better fit against the compatibility charts put out by the respective manufacturers.

Also: while searching for a P4 CPU vs HP Pavilion 754n / MS-6577 Xenon compatibility chart, I ran across this info. Perhaps most of you are already aware of this requirement. I was not, and perhaps other readers might have been unaware as well. Good to know.